Liming and other tanning operations upon hides or skins



C. M. OWEN. umme AND OTHER TANNING OPERATIONSUIPON moss 0R SKINS.

APPLICATION FILED AUG-H, 1919.

Patented June 8, 1920.

4 SHEETSSHEET I- ial,

lgzzrewri2 07 C", M. Owen,

C. M. OWEN.

LIMJNG AND OTHER TANNING OPERATIONS UPON HIDES 0R SKINS.

APPLICATION FILED AUG. 11,1919.

1,342,866. Patented June 8, 1920 2 4 SHEET$-SHEET 2- c. M. OWEN. LIMINGAND OTHER- TANNING OPERATlONS UPON HIDES 0R SKINS.

APPLICATION FILED AUG-I1, 1919. 1,342,866. F/ G. J Patented June 8,1920.

4 SHEETS-SHEET 3.

j1zverzia C Oweza C. M. OWEN.

LIMING AND OTHER TANNING OPERATIONS UPON HlDES 0R SKINS. APPLICATIONFILED AuG.H. 1919.

1,342,866. PatntedJune 8,1920.

4 SHEETS-SHEET 4- FIG. 4.

C. 714. Owen PATENT OFFICE.

CLEMENT'MAC E OWEN, 0F *ARRINGTON, ENGLAND.

LIMING AND OTHER TANNING OPERATIONS'UPON HIDES on sKINs.

Specification of Letters Patent.

Patented J une 8, 1920.

Application filed August 11, 1919. Serial No. 316,920.

To all whom it may concern:

Be it known that I, CLEMENT MAon OwnN, a subject of the King of England,residing at Stockton Heath, lVarrington, in the county of Lancaster,England, have invented new and useful Improvements in and Connected withLimingand other Tanning Operations Upon Hides or Skins, of which thefollowing is a specification.

This invention has reference to the preliminary operation in the tanningof hides or skins of limingin which they are oper ated upon by the knownmilk of lime liquor in pits or tanks for the primary purpose ofloosening the hair and swelling the hide or skin-and other similaroperations; and it has primarily for its object and effect to render theaction of the liquor upon the hides or skins more uniform and eflective,

to reduce the time occupied in effecting the treatment, and diminish thelabor and cost.

The hides or skins are suspended and held separate or apart in theliquor in the pits or tanks, and the liquor is kept in gentle movement,so that the lime, or other ingredient, is kept in suspension in theliquor and distributed, and as the liquor which is acting on the surfaceof the hides or skins is absorbed by them, it is replenished with freshand more liquor, with the effects above referred to.

The means for producing vibratory or pulsatory or like movement of the lquld is illustrated in the accompanying drawin gs, in which Figure l isan end elevation of a pit showing the vibratory or pulsatory meanswithin it, while Fig. 2 is a longltudinal section, and Fig. 3 is a plan.Fig. i is a detail showing a modified arrangement of vibratory device ormeans.

Referring to Figs. 1 to 3, the arrangement shown consists of amultiplicity of double paddles 1, disposed near the bottom of the tank,a number of which are mounted on a plurality of shafts 2 extendingacross the pit at the bottom, supported in bearings 3 resting on framesl, which are secured to the bottom of the pit.

All the shafts 2 are coupled together by a coupling bar 5, connected bypin joints to arms 6 fixed on the shafts 2; the rod 5 extends along thecenter of the bottom of the pit, and is reciprocated by a vertical rod 7extending down into the pit, and suitably mechanically operated fromabove, it being connected to the bar 5 by the bell crank 8. Thus byreciprocating the bar 7 the shafts 2 are rocked, and the paddles lvibrated. The amount of stroke of the paddles may be about thatindicated by the dotted line in Fig. 1.

The hides 10 in the case shown are placed in and lifted out of the pits,and suspended in them, on rods 11, placed across the top of the tank orpit, and supported suitably by links or cords 12, which are securedalong each side of the tank to pins or the like in any suitable way.

The paddles l are of duplex form, that is one blade is on each side ofthe axis of their supporting shafts, and they are made preferably of theform shown in Fig. 3,

namely, larger at the blade portions proper, and smaller at the innerarm and boss portions, which may be separate parts from the blades, andthe latter attached to them, as indicated by the drawings.

Directly above the shafts 2 there is a partition board 9, fixed in jawsor sockets formed on the upper part of the bearings 3; these serving asa species of guide or controlling means for the movement of the liquoron each side of the shaft; that is the two bodies of liquid acted uponby the paddles, on each side.

In the case shown in Fig. 4:, only two sets of paddles are employed, inwhich case, the blades proper consist of bars extending between two armsfixed on the shafts 2. This form is more suitable for wide pits ortanks.

By vibrating the paddles through an are such as described say 60 to 90,the ingredicuts in the liquor will be kept in suspension and properlydistributed in the liquor, and the required movement of the liquor isproduced.

In the case where the invention is applied to liming, for the purpose ofdehairing the hides or skins, the effect of the paddles and theirmovement is to keep the lime in suspension in the liquor, and they tendto draw the disturbed lime upward among the hides, which are suspendedin the liquor.

The paddles and gear may in some cases be covered over by a woodengrate, just above them, but generally, such a grating is not necessary.

With regard to the rate of movement of 1. A tank vat forliming hides vorskins, 7

having a plurality of sets of paddles arranged in the lower portionthereof, the paddles of each set being alined,a shaft supportingthe'paddles of each set, means for simultaneously and similarlyoperating all of said shafts to reciprocate the paddles, and meanshaving a fixed relation to each shaft to direct the liquid disturbed bythe paddles upwardly in the vat.

2. Atank vat for liming hides or skins,

having a series shafts mounted in the bot shafts to simultaneously andsimilarly reciprocate all of said paddles, and partitions arranged aboveand in line with the respective shafts to direct the liquid disturbed bythe paddles in the upward direction.

In testimony whereof I have signed my name to this specification in thepresence of two subscribin iwitnesses.

OTJEMENT MACE OWEN.

Witnesses:

'SOMMERVILLE GooDALL,

Anion PERKINS. i

